The far-infrared view of M87 as seen by the Herschel Space Observatory
M. Baes, M. Clemens, E. M. Xilouris, J. Fritz, W. D. Cotton, J. I., Davies, G. J. Bendo, S. Bianchi, L. Cortese, I. De Looze, M. Pohlen, J., Verstappen, H. Bohringer, D. J. Bomans, A. Boselli, E. Corbelli, A. Dariush,, S. di Serego Alighieri, D. Fadda, D. A. Garcia-Appadoo
TL;DR
This study uses Herschel Space Observatory data to analyze the far-infrared emission of M87, concluding that it is primarily due to synchrotron emission with no significant dust component.
Contribution
First comprehensive Herschel observations of M87 showing that its far-infrared emission is explained by synchrotron radiation, challenging previous dust emission claims.
Findings
Far-infrared emission is consistent with synchrotron models.
No evidence of diffuse dust component in M87.
Herschel data refutes earlier claims of far-infrared excess due to dust.
Abstract
The origin of the far-infrared emission from the nearby radio galaxy M87 remains a matter of debate. Some studies find evidence of a far-infrared excess due to thermal dust emission, whereas others propose that the far-infrared emission can be explained by synchrotron emission without the need for an additional dust emission component. We observed M87 with PACS and SPIRE as part of the Herschel Virgo Cluster Survey (HeViCS). We compare the new Herschel data with a synchrotron model based on infrared, submm and radio data to investigate the origin of the far-infrared emission. We find that both the integrated SED and the Herschel surface brightness maps are adequately explained by synchrotron emission. At odds with previous claims, we find no evidence of a diffuse dust component in M87.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.